Quote:
Originally Posted by
hypoboang
...I guess I wont feel anything until i open the airbox up a little and mod the filter...
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I read elsewhere that any mods that flow better (intake or exhaust) require optimization of the injection (such as Kev's temp sender mod box).
You also mention getting better flow by eliminating the cats. In general, cats are not the most restrictive part of an exhaust system, IF the system was designed well. Yamaha not being slackers, I suspect that the stock system is designed pretty well indeed. SO, removing your cats probably did not help you after all, especially if you left those sharp pieces of metal we see in your photos, causing beaucoup turbulence.
You will get more sound by all the mods you have shown, but I seriously doubt that you will get any more power. You may even lose a fair amount of low-end torque.
HTH